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玻色:愛因斯坦凝聚中的量化渦旋及其動(dòng)力學(xué)

玻色:愛因斯坦凝聚中的量化渦旋及其動(dòng)力學(xué)

定 價(jià):¥45.00

作 者: Hanquan Wang 編
出版社: 科學(xué)出版社
叢編項(xiàng):
標(biāo) 簽: 力學(xué)

ISBN: 9787030340740 出版時(shí)間: 2012-01-01 包裝: 平裝
開本: 16開 頁數(shù): 134 字?jǐn)?shù):  

內(nèi)容簡(jiǎn)介

  《玻色:愛因斯坦凝聚中的量化渦旋及其動(dòng)力學(xué)》的特點(diǎn)與獨(dú)到之處是我們?cè)O(shè)計(jì)了一種模守恒且能量遞減的數(shù)值方法來求得靜態(tài)的Gross-Pitaevskii方程(組)的數(shù)值解;我們也設(shè)計(jì)了一種高精度且快速的方法-時(shí)間分裂譜方法來求解動(dòng)態(tài)的Gross-Pitaevskii方程(組)的數(shù)值解;并用所求得的數(shù)值解來分別模擬玻色-愛因斯坦凝聚體的基態(tài)與動(dòng)力學(xué),特別是揭示了基態(tài)中的渦旋現(xiàn)象及渦旋運(yùn)動(dòng)規(guī)律?!恫I簮垡蛩固鼓壑械牧炕瘻u旋及其動(dòng)力學(xué)》提出的高效數(shù)值方法可以為人們利用計(jì)算機(jī)研究玻色-愛因斯坦凝聚現(xiàn)象提供理論方法,加深人們對(duì)第五種物質(zhì)-玻色-愛因斯坦凝聚體的理解,最終使人們更方便掌握這種物質(zhì)現(xiàn)象的各種規(guī)律,以便更好地使之在國(guó)民經(jīng)濟(jì)建設(shè)中發(fā)揮作用?!恫I簮垡蛩固鼓壑械牧炕瘻u旋及其動(dòng)力學(xué)》提出的高效數(shù)值方法使用方便,不僅僅只可以用在研究玻色-愛因斯坦凝聚現(xiàn)象,還可以推廣應(yīng)用到其它科學(xué)問題之中:例如一般能量泛函在有限制性條件下的求極值計(jì)算問題、具有守恒率的偏微分方程(組)的數(shù)值求解問題等。本書在在描述理論和數(shù)值方法過程中深入淺出,從簡(jiǎn)單到復(fù)雜,循序漸進(jìn)。既有深?yuàn)W的理論說明,又有詳細(xì)的算法推導(dǎo)過程;既有原始的物理模型,又有數(shù)學(xué)的簡(jiǎn)化過程;這些讓讀者既領(lǐng)悟到了數(shù)值模擬的具體過程,又了解了玻色-愛因斯坦凝聚這一極低溫度的物理現(xiàn)象。

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圖書目錄

Preface
Chapter 1 Introduction
1.1 Brief history of Bose-Einstein condensation
1.2 Quantized vortex states in BEC
1.3 Review on numerical methods for stationary states
1.4 Review on numerical methods for the time-dependent GPE
1.5 Scope of this book
Chapter 2 Stationary states for rotating BEC
2.1 GPE in a rotational frame
2.1.1 Dimensionless GPE
2.1.2 Reduction to two dimensions
2.2 Stationary states
2.2.1 Semiclassical scaling and geometrical optics
2.2.2 Ground state
2.2.3 Approximate ground state
2.2.4 Excited states
2.2.5 Critical angular velocity in symmetric trap
2.3 Numerical methods for stationary states
2.3.1 Gradient flow with discrete normalization
2.3.2 Energy diminishing
2.3.3 Continuous normalized gradient fiow
23.4 Fully numerical discretization
2.4 Numerical results
2.4.1 Initial data for computing ground state
2.4.2 Results in 2D
2.4.3 Results in 3D
2.4.4 Critical angular velocity
2.4.5 Numerical verification for dimension reduction
2.4.6 Errors of the TF approximation
2.4.7 Spurious numerical ground states when
2.5 Conclusion
Chapter 3 Dynamics of rotating BEC
3.1 Some properties of the GPE
3.2 A TSSP method for the GPE
3.2.1 Time-splitting
3.2.2 Discretization in 2D
3.2.3 Discretization in 3D
3.2.4 Stability
3.3 Numerical results
3.3.1 Accuracy test
3.3.2 Dynamics of a vortex lattice in rotating BEC
3.3.3 Generation of giant vortex in rotating BEC
3.4 Conclusion N
Chapter 4 Applications to stationary states of rotating two-component BEC
4.1 The time-dependent coupled GPEs
4.1.1 Dimensionless coupled GPEs
4.1.2 Reduction to two dimensions
4.1.3 Semiclassical scaling
4.2 Stationary states
4.2.1 Ground state
4.2.2 Symmetric and central vortex states
4.2.3 Numerical methods for the stationary states
4.2.4 Numerical results for the stationary states
4.3 Conclusion
Chapter 5 Applications to dynamics of rotating two-component BEC
5.1 Some properties of the coupled GPEs
5.2 A TSSP method for the coupled GPEs
5.2.1 Time-splitting
5.2.2 Discretization in 2D
5.2.3 Stability
5.3 Numerical results for the dynamics
5.4 Conclusion
Chapter 6 Application into ground state of spinor BEC
6.1 A continuous normalized gradient flow
6.1.1 Euler-Lagrange equations
6.1.2 A continuous normalized gradient flow
6.2 Normalization and magnetization conservative and energy diminishing numerical scheme
6.2.1 Semi-discretization in time
……
Chapter 7 Applications to dynamics of spinor F=1BEC
Chapter 8 Concluding remarks and future work
Bibliography

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